Stocks surged to gains late in the session today, as traders placed bets ahead of the third-quarter earnings season. Alcoa, which is expected to report a strong quarter, gained 4.6%. The ISM reported an upturn in the service sector in September—its index rose to 50.9, with a reading over 50 signaling growth. The Dow rose 112.08 points to close at 9,599.75. The Nasdaq was up 20.04, settling at 2,068.15, and the S&P 500 gained 15.25 to close at 1,040.46, the Wall Street Journal reports.